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Sequential retrieval on a primary key for sequential file storage has which of the following features?

  • A.Very fast
  • B.Moderately fast
  • C.Slow
  • D.Impractical

Answer: A

Correct answer: Very fast

Sequential file storage keeps the rows in primary key order, so reading them in that order is simply reading the file from start to finish - no index lookups and no seeking. That is what the organisation is for, and it is the reason it survives for batch processing despite being poor at everything else.

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